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* Don't error out writing a multibyte character to an unbuffered stream (bug ↵Andreas Schwab2014-11-031-1/+1
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* Add bug 15215 to NEWS; move bug 17344 to correct version's list in NEWS.Joseph Myers2014-10-311-3/+3
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* Move powerpc64 pread/pwrite definitions to syscalls.list (bug 14138).Joseph Myers2014-10-311-2/+2
| | | | | | | | | | | | | | | | Concluding the move of syscall definitions to syscalls.list, where the removal of support for old kernel versions has made this possible, this patch removes C definitions of pread, pread64, pwrite and pwrite64 for powerpc64. As far as I can tell, the existing syscalls.list definitions in sysdeps/unix/sysv/linux/wordsize-64/syscalls.list should suffice to produce results equivalent to what these C files do. [BZ #14138] * sysdeps/unix/sysv/linux/powerpc/powerpc64/pread.c: Remove file. * sysdeps/unix/sysv/linux/powerpc/powerpc64/pread64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/pwrite.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/pwrite64.c: Likewise.
* Fix misdetected Slow_SSE4_2 cpu feature bit (bug 17501)Andreas Schwab2014-10-271-1/+1
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* hppa: Make __SIGRTMIN 32 (ABI break).Carlos O'Donell2014-10-231-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | In the Linux kernel version 3.17 the signal numbers were rearranged in order to make hppa like every other arch. Previously we started __SIGRTMIN at 37, and that meant several pieces of important software, including systemd, would fail to build. To support systemd we removed SIGEMT and SIGLOST, and rearranged the others according to expected values. This is technically an ABI incompatible change, but because zero applications use SIGSTKFLT, SIGXCPU, SIGXFSZ and SIGSYS nothing broke. Nothing uses SIGEMT and SIGLOST, and they were present for HPUX compatibility which is no longer supported. Thus because nothing breaks we don't do any compatibility work here. Upstream kernel commit is 1f25df2eff5b25f52c139d3ff31bc883eee9a0ab. Signed-off-by: Carlos O'Donell <carlos@systemhalted.org> Signed-off-by: Helge Deller <deller@gmx.de> 2014-10-23 Carlos O'Donell <carlos@systemhalted.org> Helge Deller <deller@gmx.de> [BZ #17508] * sysdeps/unix/sysv/linux/hppa/bits/signum.h: Remove SIGEMT. Define SIGSTKFLT as 7. Define SIGSYS as 31. Define SIGXCPU as 12. Remove SIGLOST. Define SIGXFSZ as 30. Define __SIGRTMIN as 32.
* MIPS: Avoid a dangling `vfork@GLIBC_2.0' referenceMaciej W. Rozycki2014-10-221-1/+2
| | | | | | | | | | | | | | | | | | | | This satisfies a symbol reference created with: .symver __libc_vfork, vfork@GLIBC_2.0 where `__libc_vfork' has not been defined or referenced. In this case the `vfork@GLIBC_2.0' reference is supposed to be discarded, however a bug present in GAS since forever causes an undefined symbol table entry to be created. This in turn triggers a problem in the linker that can manifest itself by link errors such as: ld: libpthread.so: invalid string offset 2765592330 >= 5154 for section `.dynstr' The GAS and linker bugs need to be resolved, but we can avoid them too by providing a `__libc_vfork' definition just like our other platforms. [BZ #17485] * sysdeps/unix/sysv/linux/mips/vfork.S (__libc_vfork): Define.
* strcoll: improve performance by removing the cache (#15884)Leonhard Holz2014-10-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | this is a path that should solve bug 15884. It complains about the performance of strcoll(). It was found out that the runtime of strcoll() is actually bound to strlen which is needed for calculating the size of a cache that was installed to improve the comparison performance. The idea for this patch was that the cache is only useful in rare cases (strings of same length and same first-level-chars) and that it would be better to avoid memory allocation at all. To prove this I wrote a performance test bench-strcoll.c with test data in benchtests-strcoll.tar.gz. Also modifications in benchtests/Makefile and localedata/Makefile are necessary to make it work. After removing the cache the strcoll method showed the predicted behavior (getting slightly faster) in all but the test case for hindi word sorting. This was due the hindi text having much more equal words than the other ones. For equal strings the performance was worse since all comparison levels were run through and from the second level on the cache improved the comparison performance of the original version. Therefore I added a bytewise test via strcmp iff the first level comparison found that both strings did match because in this case it is very likely that equal strings are compared. This solved the problem with the hindi test case and improved the performance of the others. Performance comparison: glibc files -33.77% vi_VN.UTF-8 -34.12% en_US.UTF-8 -42.42% ar_SA.UTF-8 -27.49% zh_CN.UTF-8 +07.90% cs_CZ.UTF-8 -29.67% en_GB.UTF-8 -28.50% da_DK.UTF-8 -36.57% pl_PL.UTF-8 -39.31% fr_FR.UTF-8 -28.57% pt_PT.UTF-8 -22.82% el_GR.UTF-8 -26.77% ru_RU.UTF-8 -35.81% iw_IL.UTF-8 -35.34% es_ES.UTF-8 -34.46% hi_IN.UTF-8 -00.38% sv_SE.UTF-8 -36.99% hu_HU.UTF-8 -16.35% tr_TR.UTF-8 -27.80% is_IS.UTF-8 -33.24% it_IT.UTF-8 -24.39% sr_RS.UTF-8 -37.55% ja_JP.UTF-8 +02.84%
* Fix infinite loop in check_pf (BZ #12926)Siddhesh Poyarekar2014-10-141-1/+1
| | | | | | | | The recvmsg could return 0 under some conditions and cause the make_request function to be stuck in an infinite loop. Thank you Jim King <jim.king@simplivity.com> for posting Paul's patch on the list.
* BZ#17460: Fix buffer overrun in nscd --help.Roland McGrath2014-10-081-1/+1
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* Correctly size profiling reloc table (bug 17411)Carlos O'Donell2014-09-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | During auditing or profiling modes the dynamic loader builds a cache of the relocated PLT entries in order to reuse them when called again through the same PLT entry. This way the PLT entry is never completed and the call into the resolver always results in profiling or auditing code running. The problem is that the PLT relocation cache size is not computed correctly. The size of the cache should be "Size of a relocation result structure" x "Number of PLT-related relocations". Instead the code erroneously computes "Size of a relocation result" x "Number of bytes worth of PLT-related relocations". I can only assume this was a mistake in the understanding of the value of DT_PLTRELSZ which is the number of bytes of PLT-related relocs. We do have a DT_RELACOUNT entry, which is a count for dynamic relative relocs, but we have no DT_PLTRELCOUNT and thus we need to compute it. This patch corrects the computation of the size of the relocation table used by the glibc profiling code. For more details see: https://sourceware.org/ml/libc-alpha/2014-09/msg00513.html [BZ #17411] * elf/dl-reloc.c (_dl_relocate_object): Allocate correct amount for l_reloc_result.
* Clean up gnu/lib-names.h generation (bug 14171).Joseph Myers2014-09-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch eliminates the mixture of SONAME information in shlib-versions files and SONAME information used to generate gnu/lib-names.h in makefiles, with the information in the makefiles being removed so all this information comes from the shlib-versions files. So that gnu/lib-names.h supports multiple ABIs, it is changed to be generated on the same basis as gnu/stubs.h: when there are multiple ABIs, gnu/lib-names.h is a wrapper header (the same header installed whatever ABI is being built) and separate headers such as gnu/lib-names-64.h contain the substantive contents (only one such header being installed by any glibc build). The rules for building gnu/lib-names.h were moved from Makeconfig to Makerules because they need to come after sysdeps makefiles are included (now that "ifndef abi-variants" is a toplevel conditional on the rules rather than $(abi-variants) being evaluated later inside the commands for a rule). Tested for x86_64 and x86 that the installed shared libraries are unchanged by this patch, and examined the installed gnu/lib-names*.h headers by hand. Also tested the case of a single ABI (where there is just a single header installed, again like stubs.h) by hacking abi-variants to empty for x86_64. [BZ #14171] * Makeconfig [$(build-shared) = yes] ($(common-objpfx)soversions.mk): Don't handle SONAMEs specified in makefiles. [$(build-shared) = yes && $(soversions.mk-done) = t] ($(common-objpfx)gnu/lib-names.h): Remove rule. [$(build-shared) = yes && $(soversions.mk-done) = t] ($(common-objpfx)gnu/lib-names.stmp): Likewise. Split and moved to Makerules. [$(build-shared) = yes && $(soversions.mk-done) = t] (before-compile): Don't append $(common-objpfx)gnu/lib-names.h here. [$(build-shared) = yes && $(soversions.mk-done) = t] (common-generated): Don't append gnu/lib-names.h and gnu/lib-names.stmp here. * Makerules [$(build-shared) = yes && $(soversions.mk-done) = t] (lib-names-h-abi): New variable. [$(build-shared) = yes && $(soversions.mk-done) = t] (lib-names-stmp-abi): Likewise. [$(build-shared) = yes && $(soversions.mk-done) = t && abi-variants] (before-compile): Append $(common-objpfx)$(lib-names-h-abi). [$(build-shared) = yes && $(soversions.mk-done) = t && abi-variants] (common-generated): Append gnu/lib-names.h. [$(build-shared) = yes && $(soversions.mk-done) = t && abi-variants] (install-others-nosubdir): Depend on $(inst_includedir)/$(lib-names-h-abi). [$(build-shared) = yes && $(soversions.mk-done) = t && abi-variants] ($(common-objpfx)gnu/lib-names.h): New rule. [$(build-shared) = yes && $(soversions.mk-done) = t] ($(common-objpfx)$(lib-names-h-abi)): New rule. [$(build-shared) = yes && $(soversions.mk-done) = t] ($(common-objpfx)$(lib-names-stmp-abi)): Likewise. [$(build-shared) = yes && $(soversions.mk-done) = t] (common-generated): Append $(lib-names-h-abi) and $(lib-names-stmp-abi). * scripts/lib-names.awk: Do not handle multi being set. * sysdeps/unix/sysv/linux/aarch64/Makefile (abi-lp64-ld-soname): Remove variable. (abi-lp64_be-ld-soname): Likewise. * sysdeps/unix/sysv/linux/arm/Makefile (abi-soft-ld-soname): Likewise. (abi-hard-ld-soname): Likewise. * sysdeps/unix/sysv/linux/i386/shlib-versions: New file. * sysdeps/unix/sysv/linux/mips/Makefile (abi-o32_soft-ld-soname): Remove variable. (abi-o32_hard-ld-soname): Likewise. (abi-o32_soft_2008-ld-soname): Likewise. (abi-o32_hard_2008-ld-soname): Likewise. (abi-n32_soft-ld-soname): Likewise. (abi-n32_hard-ld-soname): Likewise. (abi-n32_soft_2008-ld-soname): Likewise. (abi-n32_hard_2008-ld-soname): Likewise. (abi-n64_soft-ld-soname): Likewise. (abi-n64_hard-ld-soname): Likewise. (abi-n64_soft_2008-ld-soname): Likewise. (abi-n64_hard_2008-ld-soname): Likewise. * sysdeps/unix/sysv/linux/powerpc/Makefile (abi-64-v1-ld-soname): Likewise. (abi-64-v2-ld-soname): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/shlib-versions: Add ld.so entries. * sysdeps/unix/sysv/linux/s390/Makefile (abi-64-ld-soname): Remove variable. * sysdeps/unix/sysv/linux/s390/s390-64/shlib-versions: Add ld.so entry. * sysdeps/unix/sysv/linux/x86/Makefile (abi-32-ld-soname): Remove variable. (abi-64-ld-soname): Likewise. (abi-x32-ld-soname): Likewise. * sysdeps/unix/sysv/linux/x86_64/64/shlib-versions: Add ld.so entry. * sysdeps/unix/sysv/linux/x86_64/x32/shlib-versions: Likewise.
* Remove bitrotten --enable-oldest-abi (bug 6652).Joseph Myers2014-09-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes the --enable-oldest-abi configure option, which has long been bitrotten (as reported in bug 6652). The principle of removing this option was agreed in the thread starting at <https://sourceware.org/ml/libc-alpha/2013-07/msg00174.html>. Tested for x86_64 and x86 that the installed shared libraries other than libc.so are unchanged by this patch and that libc.so disassembly and symbol versions are unchanged (debug info changes because of changed line numbers in csu/version.c). [BZ #6652] * Makeconfig (soversions-default-setname): Remove variable. ($(common-objpfx)soversions.i): Don't pass default_setname to soversions.awk. * Makerules ($(common-objpfx)abi-versions.h): Don't pass oldest_abi to abi-versions.awk. * config.h.in (GLIBC_OLDEST_ABI): Remove macro undefine. * config.make.in (oldest-abi): Remove variable. * configure.ac (--enable-oldest-abi): Remove configure option. * configure: Regenerated. * csu/version.c (banner) [GLIBC_OLDEST_ABI]: Remove conditional text. * scripts/abi-versions.awk: Do not handle oldest_abi variable. * scripts/soversions.awk: Do not handle default_setname variable. * sysdeps/mach/hurd/configure.ac: Do not handle oldest_abi variable. * sysdeps/mach/hurd/configure: Regenerated. * sysdeps/unix/sysv/linux/configure.ac: Do not handle oldest_abi variable. * sysdeps/unix/sysv/linux/configure: Regenerated.
* Add NEWS entry for previous commitSiddhesh Poyarekar2014-09-161-1/+1
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* Handle zero prefix length in getifaddrs (BZ #17371)Andreas Schwab2014-09-151-1/+1
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* malloc: additional unlink hardening for non-small bins [BZ #17344]Florian Weimer2014-09-111-1/+1
| | | | | | Turn two asserts into a conditional call to malloc_printerr. The memory locations are accessed later anyway, so the performance impact is minor.
* Fix memory leak in libio/wfileops.c do_ftell_wide [BZ #17370]Tim Lammens2014-09-111-1/+1
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* Return failure in getnetgrent only when all netgroups have been searched ↵Siddhesh Poyarekar2014-09-101-0/+6
| | | | | | | | | | | | | | | | (#17363) The netgroups lookup code fails when one of the groups in the search tree is empty. In such a case it only returns the leaves of the tree after the blank netgroup. This is because the line parser returns a NOTFOUND status when the netgroup exists but is empty. The __getnetgrent_internal implementation needs to be fixed to try remaining groups if the current group is entry. This patch implements this fix. Tested on x86_64. [BZ #17363] * inet/getnetgrent_r.c (__internal_getnetgrent_r): Try next group if the current group is empty.
* [BZ #17354] tile: Fix up corner cases with signed relocationsChris Metcalf2014-09-061-1/+1
| | | | | | | | | | | | | | | | | | Some types of relocations technically need to be signed rather than unsigned: in particular ones that are used with moveli or movei, or for jump and branch. This is almost never a problem. Jump and branch opcodes are pretty much uniformly resolved by the static linker (unless you omit -fpic for a shared library, which is not recommended). The moveli and movei opcodes that need to be sign-extended generally are for positive displacements, like the construction of the address of main() from _start(). However, tst-pie1 ends up with main below _start (in a different module) and the test failed due to signedness issues in relocation handling. This commit treats the value as signed when shifting (to preserve the high bit) and also sign-extends the value generated from the updated bundle when comparing with the desired bundle, which we do to make sure no overflow occurred. As a result, the tst-pie1 test now passes.
* CVE-2014-6040: Crashes on invalid input in IBM gconv modules [BZ #17325]Florian Weimer2014-09-031-1/+6
| | | | | These changes are based on the fix for BZ #14134 in commit 6e230d11837f3ae7b375ea69d7905f0d18eb79e5.
* i386 TLS_INIT_TP might produce bogus asm changing stack pointer [BZ #17319]Mark Wielaard2014-08-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | TLS_INIT_TP in sysdeps/i386/nptl/tls.h uses some hand written asm to generate a set_thread_area that might result in exchanging ebx and esp around the syscall causing introspection tools like valgrind to loose track of the user stack. Just use INTERNAL_SYSCALL which makes sure esp isn't changed arbitrarily. Before the patch the code would generate: mov $0xf3,%eax movl $0xfffff,0x8(%esp) movl $0x51,0xc(%esp) xchg %esp,%ebx int $0x80 xchg %esp,%ebx Using INTERNAL_SYSCALL instead will generate: movl $0xfffff,0x8(%esp) movl $0x51,0xc(%esp) xchg %ecx,%ebx mov $0xf3,%eax int $0x80 xchg %ecx,%ebx Thanks to Florian Weimer for analysing why the original code generated the bogus esp usage: _segdescr.desc happens to be at the top of the stack, so its address is in %esp. The asm statement says that %3 is an input, so its value will not change, and GCC can use %esp as the input register for the expression &_segdescr.desc. But the constraints do not fully describe the asm statement because the %3 register is actually modified, albeit only temporarily. [BZ #17319] * sysdeps/i386/nptl/tls.h (TLS_INIT_TP): Use INTERNAL_SYSCALL to call set_thread_area instead of hand written asm. (__NR_set_thread_area): Removed define. (TLS_FLAG_WRITABLE): Likewise. (__ASSUME_SET_THREAD_AREA): Remove check. (TLS_EBX_ARG): Remove define. (TLS_LOAD_EBX): Likewise.
* NEWS: Typo fix: s/wil /will /gCarlos O'Donell2014-08-271-1/+1
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* Fix typo in CVE IDFlorian Weimer2014-08-261-1/+1
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* __gconv_translit_find: Disable function [BZ #17187]Florian Weimer2014-08-261-1/+8
| | | | | This functionality has never worked correctly, and the implementation contained a security vulnerability (CVE-2014-5119).
* Mention fixes for BZs 16194 and 16275 in NEWSH.J. Lu2014-08-131-14/+14
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* Fix powerpc32 __get_clockfreq for non-power4 (bug 17263).Joseph Myers2014-08-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In my powerpc32 testing I've observed misc/test-gettimebasefreq failing. This is a glibc build (soft-float, though that's not relevant here) without any --with-cpu and without any special configuration of the default CPU for GCC either. In particular, it's one not using sysdeps/powerpc/powerpc32/power4/hp-timing.h (although in fact the processor I'm using for testing is POWER4-based), so hp_timing_t is 32-bit not 64-bit. But the VDSO call being used by INTERNAL_VSYSCALL_NO_SYSCALL_FALLBACK is generating a 64-bit result (high part in r3, low part in r4). The code extracting that result, however, expects a result of the type hp_timing_t as passed to INTERNAL_VSYSCALL_NO_SYSCALL_FALLBACK, meaning that only r3 (= 0) is used and the value in r4 is ignored. This patch fixes this by always using uint64_t as the type in INTERNAL_VSYSCALL_NO_SYSCALL_FALLBACK - reflecting the actual ABI (unconditional in the kernel) of that VDSO call. This is the minimal change for this issue - no check for overflow, no change of the type of the timebase_freq variable or the return type of __get_clockfreq to something other than hp_timing_t (such a change would simply move the implicit conversions to the over callers of that function), no change to hp_timing_t itself. Tested for powerpc32 soft float. [BZ #17263] * sysdeps/unix/sysv/linux/powerpc/get_clockfreq.c: Include <stdint.h>. (__get_clockfreq): Use uint64_t instead of hp_timing_t in INTERNAL_VSYSCALL_NO_SYSCALL_FALLBACK call.
* Disable x87 inline functions for x86_64 and SSE [BZ #17262]Siddhesh Poyarekar2014-08-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | Since: commit 409e00bd69b8d8dd74d7327085351d26769ea6fc Author: H.J. Lu <hjl.tools@gmail.com> Date: Wed Jan 29 07:51:41 2014 -0800 Disable x87 inline functions for SSE2 math When i386 and x86-64 mathinline.h was merged into a single mathinline.h, "gcc -m32" enables x87 inline functions on x86-64 even when -mfpmath=sse and SSE2 is enabled. It is a regression on x86-64. We should check __SSE2_MATH__ instead of __x86_64__ when disabling x87 inline functions. gcc-3.2 is unable to correctly compile x86_64 routines for llrint since it gets redefined. This is because gcc 3.2 does not set __SSE2_MATH__ for x86_64, thus exposing the duplicate definition. The correct fix ought to be to check for both __SSE2_MATH__ and __x86_64__ and enable those bits only when neither are defined. Tested fix with the reproducer for 409e00bd69b8d8dd74d7327085351d26769ea6fc as well as with gcc-3.2.
* Replace cpuid asm statement with __cpuid_countH.J. Lu2014-08-121-1/+2
| | | | | | | | | | | The compiler doesn't know that the cpuid asm statement in intel_check_word will trash RBX. We are lucky that it doesn't cause any problems since RBX is also used by compiler for other purposes so that RBX is saved and restored. This patch replaces it with __cpuid_count. [BZ #17259] * sysdeps/x86_64/cacheinfo.c (intel_check_word): Replace cpuid asm statement with __cpuid_count.
* Fix powerpc-nofpu __fe_enabled_env and __fe_nonieee_env (bug 17261).Joseph Myers2014-08-121-14/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | On powerpc, floating-point environment macros are defined as pointers to constants in the library that contain the bit-patterns of the desired environment, instead of being magic constants cast to pointer type. For soft-float, the bit-patterns used for fenv_t are not laid out the same as for hard-float. (e500 has a third layout used; that's not an ABI issue because these values are only meaningful within a single process, all of whose glibc libraries must come from the same build of glibc.) While the __fe_dfl_env value for soft-float was appropriate for the soft-float fenv_t representation, the other two constants had the same bit-patterns as for hard-float. Those bit patterns had the effect of having exceptions already raised, causing math/test-fenv-return to fail; this patch fixes the patterns used. (__fe_nonieee_env also had exceptions unmasked, though they should be masked to match hard-float semantics. Since there is no separate non-IEEE mode for soft-float, it's most appropriate for __fe_nonieee_env to be the same as __fe_dfl_env; this patch makes it an alias.) Tested for powerpc-nofpu. [BZ #17261] * sysdeps/powerpc/nofpu/fenv_const.c (__fe_enabled_env): Change value to 0. (__fe_nonieee_env): Define as an alias for __fe_dfl_env.
* NEWS: Mention x86-64 ld.so use of Intel MPX instructions.Roland McGrath2014-08-121-0/+10
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* Add BZ #16892 to NEWSWill Newton2014-08-121-5/+5
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* NEWS: Explain the s390 jmp_buf / ucontext_t ABI change reversal.Stefan Liebler2014-08-011-0/+11
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* PowerPC: Fix gprof entry point for LEAdhemerval Zanella2014-07-301-1/+1
| | | | | This patch fixes the ELFv2 gprof entry point since the ABI does not define function descriptors. It fixes BZ#17213.
* fcntl-linux.h: add new definitions and manual updates for open file ↵Jeff Layton2014-07-291-14/+20
| | | | | | | | description locks Open file description locks have been merged into the Linux kernel for v3.15. Add the appropriate command-value definitions and an update to the manual that describes their usage.
* Add fixed bug to NEWSAllan McRae2014-07-231-1/+1
| | | | Fixed in commit 7ee03f00.
* [BZ #17078] ARM: R_ARM_TLS_DESC prelinker supportMaciej W. Rozycki2014-07-171-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a change to the dynamic linker to add prelinker support for the R_ARM_TLS_DESC relocation. Two cases can be considered here, the usual one where lazy binding is in use and the less frequent one, where immediate binding is requested via the use of the DF_BIND_NOW dynamic flag (e.g. by using the GNU linker's "-z now" option). This change only handles the first case. In this scenario the prelinker does what the dynamic linker would do, that is it preinitialises R_ARM_TLS_DESC relocations with a pointer to the lazy specialization as provided with the DT_TLSDESC_PLT dynamic tag. A conflict is additionally created and in the conflict resolution path the dynamic linker complements the work by initialising the object's pointer as indicated by the DT_TLSDESC_GOT dynamic tag to the linker's internal lazy specialization worker function and also providing the associated link map in the second entry of the GOT. This step is required, because if prelinking is successful at the run time, then the dynamic linker's elf_machine_runtime_setup() function isn't called that would normally do so. The second case remains unresolved, because support for that scenario has not been implemented in the prelinker. In this case the lazy specialization is unavailable and the DT_TLSDESC_PLT dynamic tag is not present. The prelinker could assume the common case of static specialization and resolve the relocation, but that would require the exposure of dynamic linker's specialization worker function. Furthermore the dynamic linker would have to handle the relocation in the conflict resolution path and see if the dynamic specialization should be used instead. This however would require access to data structures currently not made available to the conflict resolution path and therefore a redesign of this part of the dynamic linker. Alternatively the prelinker could defer all processing to the dynamic linker's conflict resolution path, but that would require similar access to the said data structures. Therefore the prelinker issues an error instead and the dynamic linker has assertions to check that DT_TLSDESC_PLT and DT_TLSDESC_GOT are in use in its conflict resolution path. This change resolves all TLS failures in the prelinker testsuite, as noted in the bug report, as well as the small test case provided there. Unfortunately we don't seem to have any hooks to factor in the prelinker (if present on a system) to testing, so at this time this fix has to rely on using the prelinker test suite and enabling TLS descriptors there for coverage. [BZ #17078] * sysdeps/arm/dl-machine.h (elf_machine_rela) [RESOLVE_CONFLICT_FIND_MAP]: Handle R_ARM_TLS_DESC relocation. (elf_machine_lazy_rel): Handle prelinked R_ARM_TLS_DESC entries.
* Fix fallback fesetenv and feupdateenv on FE_NOMASK_ENV (bug 17088).Joseph Myers2014-07-171-2/+2
| | | | | | | | | | | | | | This patch fixes bug 17088, fallback fesetenv and feupdateenv not giving an error for an FE_NOMASK_ENV argument when it requires traps to be enabled. (This is the bug tested for by test-fenv-return.c.) Tested mips64 soft-float. [BZ #17088] * math/fesetenv.c (__fesetenv) [FE_NOMASK_ENV && FE_ALL_EXCEPT != 0]: Return 1 for FE_NOMASK_ENV. * math/feupdateenv.c (__feupdateenv) [FE_NOMASK_ENV && FE_ALL_EXCEPT != 0]: Likewise.
* Correct DT_PPC64_NUMAlan Modra2014-07-141-1/+1
| | | | | | [BZ #17153] * elf/elf.h (DT_PPC64_NUM): Correct value. * NEWS: Add to fixed bug list.
* nptl: Fix abort in case of set*id failure [BZ #17135]Florian Weimer2014-07-111-1/+1
| | | | | | | | | | If a call to the set*id functions fails in a multi-threaded program, the abort introduced in commit 13f7fe35ae2b0ea55dc4b9628763aafdc8bdc30c was triggered. We address by checking that all calls to set*id on all threads give the same result, and only abort if we see success followed by failure (or vice versa).
* _nl_find_locale: Improve handling of crafted locale names [BZ #17137]Florian Weimer2014-07-101-1/+11
| | | | | Prevent directory traversal in locale-related environment variables (CVE-2014-0475).
* Fix crash when system has no ipv6 address [BZ #17125]Siddhesh Poyarekar2014-07-101-1/+1
| | | | | | | | | | | Here's an updated patch to fix the crash in bug-ga2 when the system has no configured ipv6 address. I have taken a different approach of using libc_freeres_fn instead of the libc_freeres_ptr since the former gives better control over what is freed; we need that since cache may or may not be allocated using malloc. Verified that bug-ga2 works correctly in both cases and does not have memory leaks in either of them.
* NPTL is no longer an add-on!Roland McGrath2014-07-071-0/+5
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* Fix ldbl-128 powl sign of result in overflow / underflow cases (bug 17097).Joseph Myers2014-06-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | This patch fixes bug 17097, ldbl-128 powl producing overflowing / underflowing results with positive sign when the result should have been negative. This was shown up by the tests in non-default rounding modes added by my patch for bug 16315, but isn't actually limited to non-default rounding modes: rather, when rounding to nearest the wrappers produced a result with the correct sign and so always hid the bug unless -lieee was used to disable the wrappers. The problem is that in the cases where Y is large enough that the result overflows or underflows for X not very close to 1, but not large enough to overflow or underflow for all X != +/- 1 (in the latter case Y is always an even integer), a positive overflowing / underflowing result is always returned, rather than one with the correct sign. This patch moves the relevant part of computation of the sign earlier and returns a result of the correct sign. Tested for mips64. [BZ #17097] * sysdeps/ieee754/ldbl-128/e_powl.c (__ieee754_powl): Return result with correct sign in case of exponents that produce overflow except for X very close to 1.
* Correctly report nscd child process status (BZ #17092)Arjun Shankar2014-06-271-1/+1
| | | | | | | | | | The nscd parent process returns the result of a `wait' call rather than the exit status of the child it waits for. These two aren't exactly the same. In my case (and probably on most machines), the exit status is in the 2nd LSB of the result of `wait', and so: e.g. if the nscd child process returns 1, the parent returns 1 << 8, which Bash happily reports as 0.
* Fix yn overflow handling in non-default rounding modes (bug 16561, bug 16562).Joseph Myers2014-06-271-10/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes bugs 16561 and 16562, bad results of yn in overflow cases in non-default rounding modes, both because an intermediate overflow in the recurrence does not get detected if the result is not an infinity and because an overflowing result may occur in the wrong sign. The fix is to set FE_TONEAREST mode internally for the parts of the function where such overflows can occur (which includes the call to y1 - where yn is used to compute a Bessel function of order -1, negating the result of y1 isn't correct for overflowing results in directed rounding modes) and then compute an overflowing value in the original rounding mode if the to-nearest result was an infinity. Tested x86_64 and x86 and ulps updated accordingly. Also tested for mips64 and powerpc32 to test the ldbl-128 and ldbl-128ibm changes. (The tests for these bugs were added in my previous y1 patch, so the only thing this patch has to do with the testsuite is enable yn testing in all rounding modes.) [BZ #16561] [BZ #16562] * sysdeps/ieee754/dbl-64/e_jn.c: Include <float.h>. (__ieee754_yn): Set FE_TONEAREST mode internally and then recompute overflowing results in original rounding mode. * sysdeps/ieee754/flt-32/e_jnf.c: Include <float.h>. (__ieee754_ynf): Set FE_TONEAREST mode internally and then recompute overflowing results in original rounding mode. * sysdeps/ieee754/ldbl-128/e_jnl.c: Include <float.h>. (__ieee754_ynl): Set FE_TONEAREST mode internally and then recompute overflowing results in original rounding mode. * sysdeps/ieee754/ldbl-128ibm/e_jnl.c: Include <float.h>. (__ieee754_ynl): Set FE_TONEAREST mode internally and then recompute overflowing results in original rounding mode. * sysdeps/ieee754/ldbl-96/e_jnl.c: Include <float.h>. (__ieee754_ynl): Set FE_TONEAREST mode internally and then recompute overflowing results in original rounding mode. * sysdeps/i386/fpu/fenv_private.h [!__SSE2_MATH__] (libc_feholdsetround_ctx): New macro. * math/libm-test.inc (yn_test): Use ALL_RM_TEST. * sysdeps/i386/fpu/libm-test-ulps: Update. * sysdeps/x86_64/fpu/libm-test-ulps : Likewise.
* Update README and NEWS for ports directory removal.Joseph Myers2014-06-251-0/+4
| | | | | | | | | | | | | | | This patch updates README to remove a mention of the ports directory. It also adds a NEWS item for the merge of ports into the main sysdeps tree (I think it's NEWS-worthy, although not strictly a user-visible feature). Other remaining ports references to resolve: a comment in manual/signal.texi (not giving a literal path, but maybe should change anyway); a comment in config.h.in (path should be updated); scripts/list-sources.sh (appears to date back to ports being a separate repository). * README: Do not mention ports directory.
* Add compat symbols for scalb* in i386Siddhesh Poyarekar2014-06-251-1/+1
| | | | | Bring back symbols into libc.so for scalb* functions. They are no longer used but unfortunately they're now part of the ABI.
* Fix x86/x86_64 expm1l spurious underflow exceptions (bug 16539).Joseph Myers2014-06-241-11/+11
| | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes bug 16539, spurious underflow exceptions from x86 / x86-64 expm1l. The problem is that the computation of a base-2 exponent with extra precision involves spurious underflows for arguments that are small but not subnormal, so a check is added to just return the argument in those cases. (If the argument *is* subnormal, underflowing is correct and the existing code will always underflow, so it suffices to keep using the existing code in that case; some expm1 implementations have a bug (bug 16353) with missing underflow exceptions, but I don't think there's such a bug in this particular version.) Tested x86_64 and x86; no ulps updates needed. (auto-libm-test-out diffs omitted below.) [BZ #16539] * sysdeps/i386/fpu/e_expl.S (IEEE754_EXPL) [USE_AS_EXPM1L]: Just return the argument for normal arguments with exponent below -64. * sysdeps/x86_64/fpu/e_expl.S (IEEE754_EXPL) [USE_AS_EXPM1L]: Likewise. * math/auto-libm-test-in: Add another test of expm1. * math/auto-libm-test-out: Regenerated.
* Fix ldbl-128 erfl spurious underflows (bug 16287).Joseph Myers2014-06-241-12/+12
| | | | | | | | | | | | | | | | | | | | This patch fixes bug 16287, spurious underflows from ldbl-128 erfl arising from it calling erfcl for arguments with absolute value at least 1.0, although for large positive arguments erfcl correctly underflows but erfl shouldn't. The fix is simply to avoid calling erfcl, and just return 1, for arguments above a cut-off large enough that erfl correctly rounds to-nearest as 1 but not so large that erfcl underflows. Tested mips64. Also tested x86_64 and x86 to confirm the new tests (taken from the tests of erfc) don't cause any problems there; no ulps updates needed. [BZ #16287] * sysdeps/ieee754/ldbl-128/s_erfl.c (__erfl): Return 1 without calling __erfcl for arguments at least 16. * math/auto-libm-test-in: Add more tests of erf. * math/auto-libm-test-out: Regenerated.
* Fix namespace violation in pthreadtypes.h (BZ #17084)Siddhesh Poyarekar2014-06-241-1/+1
| | | | This was causing conformtest failures on i386.
* Add bug 16918 to NEWS.Wilco2014-06-241-3/+4
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